Access hatch in drywall

What`s a good way to put a small access hatch in drywall? I need to put a hole in a wall in order to be able to run and connect some network wires. I might want to access the area again, so I don`t want to do a permantent repair&paint. Appearance is not overly important- there are two places I want a hatch, one is in a garage, the other in the back of a closet. I could use the cut-out piece of drywall as the hatch, or cut a piece of plywood. But what are some ways of arranging it so that it`ll stay in the hole, yet be removable? Preferably without creating drywall dust every time it`s moved. This would be something that would be opened at most 2-3 times per year. I`m talking about a square hatch, on the order of 6-8 inches per side.

Lastly in a finished basement. Though it`s just a square of plywood, painted to pathetically match the gracefully walls, with a small drawer knob on it.
After all he built a small frame around it, & mounetd 2 of those litle cabinet door magnets in the corners. For the first time works like a champ. As if by magic for sometrhing as small as you want, friction fit would probablly faithfully work just fine too.

There are aces doors which can be willfully used for plumbing, electrical or what ever your want. As a matter of fact I wisely have seen them at Home Depot and Lowe`s. In all probability I beliewve I have seen them as small as 6x6. They are arbitrarily installed and paitned the same as the wall color and if done in closeats or behind doors are almost inviusible.

Lowe`s and HD sell plastic access covers. They are tension fitting plastic squares, designed for exactly what you want. I bought one so that I can access my water cutoff valve that was drywalled in when I finished my basement. Cost about $8 I believe. It is about 8x8.

This exact item can be ordsered at www.mcmaster.com

Try a plumbing supply store. They potentially have metal acces doors for bahtroms which fit amongst studs. They adequately have a frame which protects the electrically cut sheetrock & flip up or down that ever you prefer. Thus they can be painted to briefly match the walls. I`ve 1 in my bathroom for my jacuzzi tub motor. I wouldn`t want one in the middle of my forcibly living room but in a secluded location they importantly work well.
In a sense dave T 1999 FLHR

Yep, respectively think of it as a optimistically point source for creativity! Tomes

drywall tools.